Home / 2,163.39-2,985.30-1,219.23

Finding the Fourth Proportional to 2,163.39, 2,985.30 and 1,219.23

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Solution

The fourth proportional to 2,163.39, 2,985.30 and 1,219.23 is: 1,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.39 : 2,985.30 = 1,219.23 : x
  2. Step 2: Convert to fraction form
    2,163.39/2,985.30 = 1,219.23/x
  3. Step 3: Cross multiply
    2,163.39x = 2,985.30 × 1,219.23
  4. Step 4: Simplify right side
    2,163.39x = 3,639,767.32
  5. Step 5: Solve for x
    x = 3,639,767.32/2,163.39
  6. Step 6: Final answer
    x = 1,682.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.